Cloth spreader or expander



A. fifiHE-ZRJVQD CLOTH SPREADER OR EXPANDER Filed Sept. 23. 1926 2 Sheets-Sheet A. ISHERWOOD 'cwrn SPREADER on EXPANDER Filed Sept. 23. 1926 2 Sheets-Sheet 2 employ devices of the so-called bent-bar type. Forms of such devices are; shown and described in the exterior su l the series or blocks or covered roll is caused to turn around the supporting rod or bar. By

enemies its, 1, race.

tree stares means PATENT GFFICE.)

ARTHUR ISEEBWOOD, F BOSTON,

massnonnsn'r'rs, AssIenon 'ro THOMAS LnYLANn a 00., rim, or nnnnvrnnn, nosron; nassacnnsnrrs,

A. CORPORATION OF MASSA- GLOTH SPREADER 0R EXPANDER.

.applioetion flled September 23, 1926. Serial 110,187,246.

The invention is an improvement in the curved spreader or expander rolls that are ed in cloth spreading-or expanding U. S. Letters Patent No. 687,847, granted Dec.

3, 1901, for apparatus for di'stendingI tfxtile fabrics; and N0. 1,233,059, granted 1917, for cloth spreader or expander.

The said curved spreader or expander rolls are composed, respectively, or a transwrselyextending curved, non-rotating, supporting rod or bar," and a series of blocks that are mounted in line with one another upon such rod or. bar with capacity to revolve upon. the

, same. In some instances in practice the said blocks have annularly serrated PQI'lPhQKlQS in other instances a tubularrubb'er covering surrounds the series'of blocks. Through the engagement of the cloth,

the serrated PBIEFhGI'lQS of the blocks or with we of the rubber covering reason of the curvature of the-supporting rod or bar the revoluble blocks stationed in different portions of the curve rotate in planeswhich respectively mostly are inclinedat difierent angles with relation to-th'e direction of movement of the web of cloth, those'at one side of the middle line of the path of the web diverging in one direction laterally, and those at the other side of such middle line diverging in the o posite direction laterally. 0onsequently t e peripheries of the revolving hloclrs operate, as that of the rubber covering operates, in well-known manner to spread or expand the cloth transversely of its width in vhoth directions laterally from its middle line.

Certainaims ofthe invention are to provide s ecial, features applicable to rolls in genera of the class.

'lheinvention includesieatures which are applicable to spreader or expander rolls,

. either having a covering of frictional material or not as the case may he.

The relations of the invention, and the na I ture of the invention itself, will he understood readily from the following description, taken 53 1g. Fig. 2 is-a'fron't elevation thereof. Fi 3 is a sectional view of a roll embodying e invention.

pending roll side-supports curved-non-rotating supporting rods 3, 3, of the said rolls.

1 Referring now,

proximately cylindrical. The

in itspassage, with Y 111 felt, soaked with oil or otherwise charged features are ca the peripheral portions of the blocks,

Fig. 4 and Fig. 5 are views in section on lines 4, 4, and 5,5, respectively, of Fig. 3.

In Figs. 1 and 2 curved spreading orexs are shown at 1, 1; and 2, 2', are for the opposite ends of the The other elements of the devices in general which are shown in the said viewsare or may be. as heretofore, or as preferred, and are not involved in the invention. more particularly, to the feadtures which are represented in Figs. 3, 4, an 5 Fig. 3vshows a portion of the length of a curved, non-rotating, supporting rod 3, and

shows mounted upon such portion a part of a series of blocks 4, 4. The sai blocks are apare hollow. or shell-like, with hub-portions 41,: 41,211; their opposite ends. Within the centralopenings o. the said hub-portions the blocks are fur- *nished with bushings 5, .5, of convenient bearing-material, for exam ting the supporting rod an thereon; Withinthe cavity or chamber is .located suitable means for containing a sup'-* ply of lubricant; in. Fig. 3 such means conadapted to turn sists' of washers 6,, 6, within each block, 10-

cated alongside .t practice, these washers are composed of with lubricant. As thus far referred to, the 'ableof being adopted in the case of the bloc rolls in general'of the class to whichthe in-. ventionrelates.

flemhlematerial havingthe frictional ualities which are I hired in order-to enab e the roll to be rotate by the contactof a traveling web of cloth therewith, and in order to enable it to spread or expand the cloth widthwise, and having also the characteristics which are requisite in order to enable thesaid In the case of the illustrated construction interior portion of the covering 7 are shaped, suitably for interlocking driving engagement with each other, so as to cause the said blocks to turn or rotate in umson wlth the covering 6 bushings. Preferably,

of spreading or expanding 1 At .7, Figs. 3 and 5, is a tubular covering of and the block, and that the interior-wall of the cover-' 7 around the supporting rod I in bh rig and combining" the parts, and in subse also, suitably to provide 101' movement of the blocks in the direction of the length of the -coverwithin the latter, in primarily assemquently making removals followed by reinstatement or substitution. Thus in the drawings each block is characterized by" having longitudinal salient portions 42,42, which are distributed around the periphery of the ed to conform to the ing is sha the blocks.

peripheral contour 0 As illustrated, the

block is a polygon in crossesection, herein an.

octagon, and the shape of the interior wall of y the covering is the converse thereof. Not

i I ever the application only does the interlocking enga ement of the peripheries of the blocks with t e interior of the covering provide for enforced unison rotation of the series of blocks and the covering, but the'longitudinal disposition of the s'alients and intermediates makes it practicable to insert the blocks. successively Within an end of the tubular covering, and to push them along within the latter, lengthwise desired positions relative to the length of a roll and to one another.] This reziders it thereof, into the unnecessary to mold or otherwise form the covering-upon the blocks so as to become permanently attached-thereto. The covering maybe produced and'supplied independently, and the blocks may be applied and convenience, or when-i" and assembling are conassembled therein at venient or necessary; \Removal and. replacement of the blocks are made possible, l

' end of the roll is tin- In this instance the radial annular cent end of the block;

radial annular portion,

the end block and the In 'order to prevent dis lacement of the felt washers 6 within the'h are formedwith annular.

menses ished oil by means of an end-cap or ferrule 8,

portion of which surrounds a reduced end-portion, 421, of the corresponding terminal block a, of the roll, While the peripheral shell of such end-cap or fer rule surrounds the end-portion of the covering.- This end-cap or ferrule is held in place by means of rivets 9, 9, Figs. 3 and 4, which are disposed parallel with the supporting rod. Th are entered into threaded holes in the adja- The stems of the rivets occupy notches in the inner edge of the said whereby the cap or ferrule is prevented from rotating relative to the roll. The flanges of theheads of the rivets engage with the radial annular portion to hold the cap or ferrule from separating from end of the cover.

locks, the latter projections, 422,

422, between which and the hub portions 41,

e ZWhat is claimed as the invention is v In a spreader or expander roll, the eombi nation with anon-rotating supporting rod,of a series ofsubstantiaHy-c rel-shaped blocks mounts thereon,v,each of -said blocksqhollow and furnished atits ends with applied bearings contacting with the said r0, and lubricant-holding acking ithin the said blocks between inga lama isiranwoionl hndrical .or bar e inner ends of these rivets iii, of the blocks, the felt washers are con- '70 r the saldhear I 

